FACTORS REGULATING ONTOGENESIS OF A. SALINA AND ITS PRODUCTIVITY IN CASE OF IN VITRO CULTIVATION

The article is devoted to development of aquaculture of Artemia (A. Salina). Decapsulated eggs and live Artemianauplii, which have a high nutritional value and a necessary set of biologically active substances, are widely used in cultivation of fish larvae. Biological characteristics of Artemia, such as rapid growth, high fecundity, the amount of cysts that are preserved and stored, contributed to its commercialization. The demand for Artemia eggs is growing from year to year in the world market, but the volume of their production in natural reservoirs supplies only 40% of the demand. The missing volumes of Artemia can be satisfied by artificial reproduction in aquaculture. The purpose of our research was to assess the factors that regulate the ontogeny and productivity of A. Salina in aquaculture. The results of the research showed that the cultivation conditions we created, such as270Ctemperature, illumination intensity of 1500 lux, saturation of the environment with oxygen (SO2) - 90%, pH 8.2,provided 82% hatching of nauplii within the first day, and the hatching increased and reached 96-97% on the second day. Experimentally selected abiotic and biotic factors that determine the effectiveness of Artemiacultivation have shown fairly good results. Analysis of literature sources and our own data showed that it is not enough to improve abiotic and biotic factors inn case of in vitro cultivationin order to obtain high productivity of Artemia, first of all, it is necessary to have high-quality material - Artemia cysts or eggs, which should belocallyproduced, cultivating Artemia in a closed cycle. Development of effective biotechnology for artificial reproduction of Artemia in vitro is of great practical importance.